US 12,134,229 B2
Method and apparatus for producing 3D moldings by means of a layering technique, and recoater with vacuum closure
Bastian Heymel, Augsburg (DE); Martin Sinzinger, Augsburg (DE); and Tobias Lachenmair, Augsburg (DE)
Assigned to VOXELJET AG, Friedberg (DE)
Appl. No. 17/618,320
Filed by Voxeljet AG, Friedberg (DE)
PCT Filed Jun. 11, 2020, PCT No. PCT/DE2020/000128
§ 371(c)(1), (2) Date Dec. 10, 2021,
PCT Pub. No. WO2020/249151, PCT Pub. Date Dec. 17, 2020.
Claims priority of application No. 10 2019 004 176.3 (DE), filed on Jun. 14, 2019.
Prior Publication US 2022/0363000 A1, Nov. 17, 2022
Int. Cl. B29C 64/165 (2017.01); B22F 10/10 (2021.01); B22F 10/20 (2021.01); B22F 12/52 (2021.01); B22F 12/67 (2021.01); B28B 1/00 (2006.01); B29C 64/214 (2017.01); B29C 64/255 (2017.01); B29C 64/329 (2017.01); B29C 64/35 (2017.01); B29C 64/371 (2017.01); B33Y 10/00 (2015.01); B33Y 30/00 (2015.01); B33Y 40/00 (2020.01)
CPC B29C 64/165 (2017.08) [B22F 10/10 (2021.01); B22F 10/20 (2021.01); B22F 12/52 (2021.01); B22F 12/67 (2021.01); B28B 1/001 (2013.01); B29C 64/214 (2017.08); B29C 64/255 (2017.08); B29C 64/329 (2017.08); B29C 64/35 (2017.08); B29C 64/371 (2017.08); B33Y 10/00 (2014.12); B33Y 30/00 (2014.12); B33Y 40/00 (2014.12)] 22 Claims
OG exemplary drawing
 
1. An apparatus for applying fluids suitable for 3D printing apparatuses, said apparatus comprising a coating blade, an outlet opening for discharging fluid, a controllable mechanism for generating defined oscillations of the coating blade, a recoater with a reservoir for receiving fluid, characterized in that the recoater is connected to a means for generating a vacuum in the fluid, and the vacuum is operated in coordination with the controllable mechanism for generating defined oscillations, optionally wherein the fluid is a particulate material.